Any new computer hardware on the market these days is plenty powerful enough to handle anything a typical user might ever want to do.
That means that unless you're a power user (or video game or VR enthusiast), there's going to be very little difference between your experiences using a modern low-end vs a modern high-end system; either one will work just fine for you.
So the remaining criterion (other than purchase price) is the quality of the user-experience -- i.e. how much of your time at the computer is spent getting accomplished the things you want to accomplish, and how much is spent dealing with computer problems?
Minimizing the latter is what Mac users are willing to pay extra for.